Centrifugal separator



D. TATINI CENTRIFUGAL SEPARATOR 6 Sheets-Sheet 1 March 8, 1938. l

Filed July '7, 1956 .March 8, 1938, D. TEATINI 2,110,778

CENTRIFUGAL SEPAHATOR Filed July 7, 193e e sheets-sheet 2 March S, 1938. D. TEATINI 2,110,778

CENTRIFUGAL sEPARAToR Filed July 7, 1936 6 Sheets-Sheet 3 @9.9. 2%940. igz.

fg. @9.15. Fg.151q.14. -WQ

:ffm/evian' March 8, 1938. D. TEATINI 2,110,778A

CENTRIFUGAL SEPARATOR Filed July '7, 193e e sheets-sheet 4 March 8, 1938. D. Tr-:A'rlNl l r 2,110,778

CENTRIFUGAL SEPARATOR Filed July '7,` 1956 6 Sheets-Sheet 5 March 8,1938. D. TEATINI I 2,110,778

' CENTHIFUGAL SEPARATOR Filed July '7, 1936 6 Sheets-Sheet 6 Fw c l m u32! 1% La@ .f

11`i Jiz laf/ i i y@ i e M- s s e I i'2 .L E 1 2V/fm, www M,

Patented Mar. 8, 1938 UNITED STATES PATENT OFFICE Application July "l, i936, Serial No. 89,401

In Belgium July 15,1935

11 claims. (criar- 19) This invention relates to centrifugal. separators and to methods of producing blocks of solid material. l

One object of the invention is to provide a method of producing blocks from a mixture of a solid and a liquid by simultaneously separating the liquid from the solid and depositing the solid in moulds by centrifugal action, then removing the blocks from the moulds. A supersaturated solution of the solid material may be forced through the solid deposited in the moulds by centrifugal action so that the solution partly crystallizes in the solid in the moulds and' cements the block together. To facilitate removal of the blocksfrom the moulds they are preferably constituted by the spaces between ilexible ribbed partitions which may be separated from one another after the blocks have been formed and then bent so as to free the blocks.

Another object of this invention is to provide a centrifugal separator comprising a rotatable drum having a perforated wall and a plurality of moulds detachably mounted in the drum to cover its perforated wall so that solid material will be deposited by\centrifugal action i'n the moulds while liquid material will pass through the moulds and the perforated wall of the drum and will be separated from the solid material.

A further object of this invention is to provide a simple and convenient construction of the moulds. The moulds are preferably made from exible partitions formed with ribs which partitions when assembled together constitute a cellular structure the cells of which correspond to the size and shape of the desired blocks. The partitions are preferably ilexible and may be secured directly to a crown on the drum or they maybe secured to-a cap' which is secured to the crown of the drum. v

Various other objects of the presentAnvention will be apparent from the following description of several mechanisms embodying the invention, and the invention also comprises certain new and useful features of construction hereinafter described and claimed.

In the accompanying drawings,

Figure 1 is a diagrammatic sectionl through the drum of a centrifugal separator in accordance with the 'inventionr J Figure 2 is a plan of the separator shown in Figure 1,4 certain parts -being broken away to show the construction,

Figure 3 is a detailed section showing a cap and a part of a 'partition suspended from they can.

' on which rests and to which is Figure4isaview ofthepartsshowninFigure 3 as seen from the right,

Figure 5 is a partial section through the-drum of a modied construction of the separator,

Figure 6 is a view of the parts shown in Figure 5 as seen from the right,

Figure 7 is a plan viewlof the parts shown in Figure 5 as seen from above,

Figure 8 is a section on the line 8-3 of Figure 5,

Figures 9, 10, and 11 show various forms of partition members.

Figure 12 shows a modied construction of the partition members and Figures 13 and 14 show the partition:members used in Figure l2,

Figure 15 is a view of the parts shown in Figure 12 as seen from the left.

Figure 16 is a plan of Athe parts shown in Figure 17 shows a modication of the .arrangement shown in Figures 12 to 16.

Figures 18 and 19 are a verticalsection and a planrespectively of yet another modification of the centrifugal separator, while Figures 20 to 25 inclusive illustrate yet further constructions by which the partition members may be mounted in the drum,

Figure 26 is a plan through another construction of separator, parte being broken away.

Figures 27 and 28 are front andside elevations respectively of .a shaping unit employed in the separatorshown in Figure 26.

Figures 29 and 30 are sections on the lines 29-29 and 30-30 of Figure 27.

lFigure 31 is an enlarged view of a part of Fig-,

ure 27 and,

Figure 32 is a section on the line 32-32 of Figure 31,

Figure 33 is a ure 32, and

Figure 34 is a view of the block produced by the centrifugal separator.

Referring to Figures l to 4 the separator comprises a perforated rotary drum A inside which is mounted a sieve B by means of a perforated corrugated plate C or any other known support. The drum is provided with an external flange a iixed a crown D.

plan oi the parts shown in Fig- 4o 'I'he latter, projects towards the interior of the 56 drum A and'partly fits in caps E. each support- Ving a mould unit F. These structures collectively entirely cover the internal periphery of the drum A and possess the partitions required for shaping the treated produ to the desired di- .......Mmmmwamwm @awww d mw m www... A M :am ha.. mmmmmmmmfmmmmm mmmmmmmmm m. .mmmwmwmmw u. mmmmmw @EN @T m -..wm .m11 mmmmmmmmmmmmmmmmmmw mmmmmmmmmmmw M m mwmammmmmwmwn wmmnmmmumm um .www Mm ...www ...m m mm. L... www ...www ...MY mm c m a d m am m mmmmmmmmmwmmw mmmmmhmkm m... mwmwmmwmnmm .mmmwmmmmmmmm.mmmwmmmmmmmmm -..w s mm .mmmfmmmmhm m Dmmmmmmmmmwmhmm m mw hmm mmmmd.. Y www@ amm y um@ m m m mm... f.. T www? F mmm MM .m 1M ...mm fm .w u m n um .m ..7 m mmmmmmmmmmmmmmmmmmmmmmmmmmm..mm. mmmmmmmmmmmmm mim@ am... mm mmmmxm u im MLM Lm m WHEN.; m... www... www ...Mmmm mmmmwmmm mmm..mmm.mmmmmmwmm mm ...www n.. Mmmm mmm .....mymmm .m www. mm. mmmm mmmmmmmmmm mmmmmmmm Mmmm .mmmmmmmmw www M.mmwmmmmmwmmmwmmmm.E ...www mmmxmmm Mmmm 3. Mw .n mw .mmmndzwmmdm .0. .m d www un du ha m nnb m 4.... 2 .m mmmmm...www mmmmmmmm .M im www Mmmm@ ly aifeeting the colour of the product inthe case of the application to the sugar industry, holes es have been pierced in the boundary wan of thet handle e2, the said holes thus opening to the exterior of the basket A. The frame M'is formed of lateral plates Mi and M2 mounted at their base on pivots I I and l2 carried by a sole L. In its upper part, the plate MI is mounted on a pivot e5 provided in each cap E,'while the plate M2 is terminated by a projection M3 projecting into a recess in the cap E and held there by a second spring catch E2.

The sole L of each frame M rests, as described with reference to Figure 5, in the drum A on a base crown provided with registering projections which project into corresponding recesses s in the said sole. V

Inserted vertically in the frame M are partition plates f clamped against the'plates MI and M2 and guidedon their bases by a rib q provided in the sole L of the frame projecting into notches p in the plates. The said plates are provided, at predetermined intervals.. with ribs' k formed, for example, by stamping from a thin plate made of a metal or alloy of metals possessvbounded by successive plates and their ribs kl,

it is merely necessary, after having separated the plates froml their frame, to impart to them a sufficient outward curvature. Consequently, the ribs kl move apart, releasing the crystallized blocks.

Longitudinal flanges a are provided externally on the lateral plates Mi and M2 andclose the joints between adjacent units. Furthermore, in orde'r that a group of successive plates f may occupy a rectangular space although the frame- M is not rectangular, a smooth plate fi is inserted between two groups of three or four ribbed plates, and as indicated in Figure 2, has a thickness which increases towards the exterior of the circumference of the cellular unit.

In a general manner, under the action `of the centrifugal force, the solid-liquid mixture for example, a mixture of sugar and its mother liquor, introduced into the centrifugal is projected against the cellular elements F and `the solid portion lls the cells constitutedv by the plates f, assuming the shape thereof, while the mother liquor is expelled through the perforations of the drum A. When the cells have become filled with material, the anival of the mixture is stopped, and then washing is carried out by introducing van appropriate liquid into the centrifugal, this being followed by a liquid (for example a sugar solution vwhen sugar is thev solid) adapted to cement the individual crystals together. The solution is at such a' temperature and degree of supersaturation that, on being forced through the souci material in the cells between the partitions, it partially crystallizes therein uniting the particles of material in a cell together to form a block. Finally, the blocks are dried by means of an intensive current of hot or cold air. The elements F are then dism'ounted, and the products are stripped fromthe moulds *b'y curving the plates as described hereinbefore. p

The dimensions of the lproducts obtained obviously depend upon those of the plates I and their ribs. Itis thus possible to produce directly. in the sugar factory for example, pieces of sugar of normal size. -It is likewise possible to produce blocks or cakes by increasing the width of the plates, and in particular, cakes having on one of the faces or both faces grooves r of the desired depth. as indicated in Figure 34.

Figures 31, 32 and 33 of the accompanying drawings show especially an arrangement of the the distance between the ribs kl will determine the height of the c ake. In order to produce the grooves r, other plates f2 provided with longitudinal ribs k2 are placed against the unribbed faces of the plates f'. as shown in Figures 31 to 33. The said longitudinal ribs k2 have a height corresponding to the depth to be given to the grooves r in the cakes. In the present case, the longitudinal ribs k2 have been recesse'd slightly at the place where they meet the transverse ribs kl for permitting the assembling of the plates. It \is obvious that the converse arrangement could be employed. For stripping from the moulds, the plates f2 are withdrawn before imparting to the plates f the curvature necessary for stripping off the blocks.

It is obvious that constructional modifications may be made in the devices described without departing from the scope of the invention and it is the intention therefore to be limited only as indicated by the scope of the following claims.

,I claimr- 1. A centrifugal separator, comprising a vertically arranged open topped rotatable drum having a perforated side wall, a crown ring` mounted.

on the rim of said drum, a plurality of removable moulding units of cellular structure covering said perforated wall, a plurality of caps detachably suspending said moulding units from said crown ring and detachably supporting said cellular structure of said moulding units and locating means on said crown ring,and a spring catch housed in said caps cooperating to locate said caps on said crown ring.

2. A centrifugal separator, comprising a vertically arranged open topped rotatable drum having a perforated side wall, a crown ring mounted on the rim of said drum, a plurality of remov-A able moulding unitsy of cellular structure covering said perforated wall, a plurality of caps detachably suspending said moulding units from said crown ring, a pair of side partitions and a .sole hingedly connected to each cap and surrounding and 'supporting said cellular structure of said moulding units and locating means on said crown ring` and said caps' cooperating to locate said caps on said crown ring. s,

3. A centrifugal separator. comprising a vertically arranged open topped rotatable drum having a perforated side wall,` a crown ring mounted on the rim of said drum, a plmuty of removable moulding units of cellular structure covering said perforated wall, a plurality ofcaps detachably :suspending said moulding units from said crown ring, a pair of side partitions and l. sole lhingedly connected to each cap and surrounding and supporting said cellular structure of said moulding units and locating means on said sole and on said cellular structurecooperating to locate said cellular structure on said sole.

4. A centrifugal separator, comprising a verticallyarranged open topped rotatable drum halving aperforated sidewall, acrownringmounted moulding units of cellular structure covering said perforated wall. a plurality of caps detachably suspending said moulding umts from said crown 5 ring, a plurality of vertical flexible partitions formed with horizontal ribs whose depth is substantially equal to the spacing of the partitions and a second set of flexible partitions each mounted in contact with a partition of the first set and formed with longitudinal ribs, whose depth is less than the spacing between the partitionsga pair of side partitions `and. a sole hingedly connected to each cap surrounding and supporting said flexible partitions forming said cellular structure of said moulding units.

5. A centrifugal separator, comprising a vertically arranged open topped rotatable drum having a perforated side wall. acrown ring mounted on the rim of said drum, a plurality of individuzo ally removable moulding units of cellular structur covering said perforated wall, and a plurality of caps one for each individual moulding unit detachably suspending said moulding units from saidcrown ring. I 25 6. A centrifugal separator, comprising a vertically arranged open topped rotatable drum having a perforated side wall. a crown ring mounted on the rim .of said drum, a plurality of individuc ally removable moulding units of cellular struco ture covering said perforated wall, a plurality of caps one for each moulding unit detachably sus-` pending said moulding units from. said crown ringandlocatingmeansonsaidcrownringand oneachofsaidcapsco-operatingtolocate saigl capsonsaidcrownring.

7. A centrifugal separator, comprising a vertically arranged open toppedrotatable drum havifofthedmmsupportingsaidremovablemoulding unitsand locating means on said annular memberandonthebottomofeachofsaidmould- 1lllllliicO-Operaingtolocatesaidxnouldinsr on the rim of said drum. a plurality of removable unitsonsaidannularmemberandlocatingmeans onsaidcrownringandoneachofsaidcapscooperatingtolocate said caps onsaidcrownring.

8.Acentrifugalseparator,comprisingaverti callyarrangedopentopped rotatahledrum hav-- lngaperforatedsidewalhacrcwnrlngmounted ontherimotsaiddrumapluralityofindividuallyremovabiemoulding imitsofcdlularstructure covering saidperforatedwall, a plurality of capsone for each moulding unit detachablysuspendingsaidmouldingunitawhich capsareof trapezoidal shape and interlock forming a continuousrings'upportedbysaidcrownringand locatingmeansonsaidcrownringandoneach oi'saidcapsco-operatingtolocatesaidcapson said crcwnrlngi 9. Acentrifugal separator comprising a verticaiiyarrangedopentoppedrotatabledmmhavv-ingaperforatedsidevlralLaninwarrllyprojectcntherimoi'sallidrum.andapluralityofV slotted and ribbed partitions forming a cellular structurecoveringsaidperforatedsidewallde- -tachablymountedbysaidslotsinsaidslottedrecessonsaidtrapeuoidalandrectangularelementsr Y 10. A centrifugal comprising a vertiseparator callyarrangedopentoppedrotatablednmhav- -ingaperi'oratedsidewalLaninwardlypi-ojecting 'crownngmountedontherimofthedrum.a

plurality of removablepartitions forminga cellularstnicturecovcmsaidperforatedwalLeach partitionbeingprovidedwith'anenlargedhead f ormedwitharecessadapted'toengagesaid crownringbysaidrecessandsuspendsaid'partition, and shaped for abutting relationship with oneanothercnsaidcrownring.andlocating meansonsaidcrownringandonsaidenlarged headsco-operaiingtolocatesaidmlargedheads onsaidcrownring. Y

iLAcentrifugalleparatoraccordingtoclahn lilcomprisingaplnforccnnectingtheheadsof thepartitionstogetheringwupseachofwhich 

